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SafeCaller If you see a number listed with this label, it means an OkCaller user has labelled the number as a 'safe' contact.

Not Safe If you see a number listed with this label, it means an OkCaller user has labelled the number as a problematic contact. For example, it may be a telemarketer, bill collector, prank caller, or other nuisance caller.

The listings above include (when shown) the full contact name, if available, registered to 312-878-7841.

If multiple listings are shown for the same number, it may be several individuals who reside at the same address. It may also be variations in spelling of the same individual, or a previous person no longer associated with this number.

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In NATIONAL format, aka ITU-T Recommendation E123, the number is written (312) 878-7841
Likewise, in E123 INTERNATIONAL formal, it is written +1 312-878-7841

In E.164 standard format, the number is written +13128787841. E164 format is as per E123 INTERNATIONAL format but with no formatting applied.
In RFC3966 standard format, the number is written tel:+1-312-878-7841. FC3966 is as per INTERNATIONAL format, but with all spaces and other separating symbols replaced with a hyphen, and with any phone number extension appended with ";ext=". It also will have a prefix of "tel:" added .

To dial this number from within the United States, one would dial 1 (312) 878-7841
To dial this number from inside the United Kingdom or the European Union, one would dial 00 1 312-878-7841

Numbers like 3128787841 may be located in the America/Chicago timezone, where the local time is currently Wednesday the 29th of March 2023 12:06:20 PM. However, phone number portability regulations mean it is not possible to determine the exact location based on the area code and prefix alone.